How do I use the wheel function of MSAC-US5 mouse?

Please refer to the steps below when you only want to use MSAC-US5 mouse:1. Double click [Sony USB Mouse] from [Add/Remove Programs Properties].2. Select [Yes] on the [Uninstaller] dialog box.3. Connect the USB mouse and USB connector. You can then use the other USB mouse that uses Microsoft original USB mouse driver.

Note:You have to restart the PC after installing the driver. Otherwise you might not able to use the wheel function.

Alternatively, you can download the updating program [Sony USB Mouse Driver 1.41 Update Program] from the VAIO FAQ support web page and update to the new driver.